

A116070


The digits of pi(n)=A000720(n) are obtained by adding pairs of adjacent digits of n.


2



15, 27, 226, 227, 334, 441, 2107, 3132, 5172, 10231, 40203, 50136
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..12.


EXAMPLE

50136 belongs, since pi(50136)=5149 and (5+0)=5, (0+1)=1, (1+3)=4 and
(3+6)=9.


CROSSREFS

Cf. A000720, A115999.
Sequence in context: A087719 A174216 A249874 * A186074 A230649 A229195
Adjacent sequences: A116067 A116068 A116069 * A116071 A116072 A116073


KEYWORD

nonn,base,fini,more


AUTHOR

Giovanni Resta, Feb 13 2006


STATUS

approved



